1: dnl Process this file with autoconf to produce a configure script.
2:
3: #Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006 Free Software Foundation, Inc.
4:
5: #This file is part of Gforth.
6:
7: #Gforth is free software; you can redistribute it and/or
8: #modify it under the terms of the GNU General Public License
9: #as published by the Free Software Foundation; either version 2
10: #of the License, or (at your option) any later version.
11:
12: #This program is distributed in the hope that it will be useful,
13: #but WITHOUT ANY WARRANTY; without even the implied warranty of
14: #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.#See the
15: #GNU General Public License for more details.
16:
17: #You should have received a copy of the GNU General Public License
18: #along with this program; if not, write to the Free Software
19: #Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
20:
21:
22: dnl We use some automake macros here,
23: dnl but don't use automake for creating Makefile.in
24: AC_INIT([gforth],[0.6.9-20070604],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
25: AC_PREREQ(2.54)
26: #snapshots have numbers major.minor.release-YYYYMMDD
27: #note that lexicographic ordering must be heeded.
28: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
29: UPDATED="June 02, 2007"
30: AC_SUBST(UPDATED)
31: AC_CONFIG_HEADERS(engine/config.h)
32:
33: #suppress the "-g -O2" default
34: test "$CFLAGS" || CFLAGS=-O2
35:
36: AC_ARG_ENABLE(force-reg,
37: AC_HELP_STRING([--enable-force-reg],
38: [ Use explicit register declarations if they appear in
39: the machine.h file. This can cause a good speedup,
40: but also incorrect code with some gcc versions on
41: some processors (default disabled).]),
42: ,enable_force_reg=no)
43: test "$enable_force_reg" = "no"||
44: AC_DEFINE(FORCE_REG,,[Define if you want to use explicit register declarations for better performance or for more convenient CODE words (does not work with all GCC versions on all machines)])
45:
46: AC_ARG_ENABLE(force-ll,
47: AC_HELP_STRING([--enable-force-ll],
48: [ Use explicit long long declarations if they appear in
49: the machine.h file. This can cause a good speedup,
50: but also incorrect code with some gcc versions on
51: some processors (default disabled).]),
52: ,enable_force_ll=no)
53: test "$enable_force_ll" = "no"||
54: AC_DEFINE(FORCE_LL,,[Define if you want to use explicit long long declarations for better performance (does not work with all GCC versions on all machines)])
55:
56: AC_ARG_ENABLE(force-cdiv,
57: AC_HELP_STRING([--enable-force-cdiv],
58: [ Use the native C division - symmetric - instead of
59: floored division (default disabled).]),
60: ,enable_force_cdiv=no)
61: test "$enable_force_cdiv" = "no"||
62: AC_DEFINE(FORCE_CDIV,,[Define if you want to use explicit symmetric division for better performance])
63:
64: AC_SUBST(PROFEXES)
65: AC_SUBST(PROFOBJS)
66: AC_ARG_ENABLE(prof,
67: AC_HELP_STRING([--enable-prof],
68: [ Build gforth-prof, which outputs frequently occuring
69: sequences of primitives.]),
70: ,enable_prof=no)
71: if test "$enable_prof" = "no"; then
72: PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o"
73: fi
74:
75: AC_ARG_WITH(debug,
76: [ --with-debug specifies option -g to compile with debug info
77: --without-debug omits the -g switch and creates smaller images on
78: machines where "strip" has problems with gcc style
79: debugging informations.],
80: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
81:
82: dnl PEEPHOLE="yes"
83: dnl AC_ARG_WITH(peephole,
84: dnl [ --with-peephole Enable peephole optimization (default)
85: dnl --without-peephole disables peephole optimization. Creates smaller,
86: dnl but slower images.],
87: dnl PEEPHOLE="$withval")
88:
89: GCC_LD="\$(GCC)"
90: EC_MODE="false"
91: EC=""
92: engine2="engine2.o"
93: engine_fast2="engine-fast2.o"
94: no_dynamic=""
95: image_i=""
96: signals_o="io.o signals.o"
97:
98: AC_ARG_WITH(ec,
99: AC_HELP_STRING([--with-ec=<arch>],
100: [ Build gforth for systems without OS.]),
101: [if test "$withval" = "no"; then
102: echo "defining hosted system"
103: else
104: echo "defining standalone system (${withval})"
105: AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
106: EC_MODE="true"
107: EC="-ec"
108: engine2=""
109: engine_fast2=""
110: no_dynamic="-DNO_DYNAMIC"
111: image_i="image.i"
112: if test "$withval" != "yes"; then
113: signals_o="io-${withval}.o"
114: else
115: signals_o="io.o"
116: fi
117: GCC_PATH=$(which $CC)
118: LIB_PATH=${GCC_PATH%/*/*}
119: GCC_LD="\$(LD)"
120: platform=${withval}
121: fi])
122:
123: #variables mentioned in INSTALL
124: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
125: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
126: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
127: AC_ARG_VAR(GCC_PR15242_WORKAROUND, [Force the enabling (1) or disabling (0) of a workaround for a gcc-3.x performance bug (default unset: use workaround for gcc-3.x)])
128:
129: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
130: AC_ARG_VAR(ac_cv_sizeof_void_p, [sizeof(void *)])
131: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
132: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
133: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
134: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
135: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
136: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
137: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
138: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
139: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
140: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
141: AC_ARG_VAR(condbranch_opt, [enable (1) or disable (0) using two dispatches for conditional branches])
142: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
143: AC_ARG_VAR(asmcomment, [assembler comment start string])
144: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
145:
146: #set up feature test macros, so the tests get them right:
147: # turn on all POSIX, SUSv3, and GNU features if available
148: AC_GNU_SOURCE
149: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
150:
151: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
152: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
153: dnl but not for _XOPEN_SOURCE)
154: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
155: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
156: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
157: # turn on large file support with 64-bit off_t where available
158: AC_SYS_LARGEFILE
159: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
160: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
161:
162: #currently we force direct threading this way. Eventually we should
163: #setup in the arch and engine files right
164:
165: AC_PROG_CC
166:
167: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
168:
169: AC_MSG_CHECKING([whether to use two dispatches per conditional branch])
170: test x$condbranch_opt = x &&
171: if ($CC -v 2>&1 |grep -q 'gcc version 3'); then
172: condbranch_opt=0
173: else
174: condbranch_opt=1
175: fi
176: AC_MSG_RESULT($condbranch_opt)
177: AC_SUBST(condbranch_opt)
178:
179: AC_SUBST(CC)
180: AC_SUBST(GCC_LD)
181: AC_SUBST(DEBUGFLAG)
182: AC_SUBST(EC)
183: AC_SUBST(EC_MODE)
184: AC_SUBST(engine2)
185: AC_SUBST(engine_fast2)
186: AC_SUBST(no_dynamic)
187: AC_SUBST(image_i)
188: AC_SUBST(signals_o)
189:
190: #this is used to disable some (not generally essential) part of the
191: #Makefile that some makes don't grok. It would be better to test for
192: #this specific Makefile feature than the make version.
193: AC_MSG_CHECKING(make type)
194: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
195: GNUMAKE='#'
196: test "$make_type" = "GNU Make" && GNUMAKE=''
197: AC_MSG_RESULT($make_type)
198: AC_SUBST(GNUMAKE)
199:
200: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
201: OLDLDFLAGS=$LDFLAGS
202: LDFLAGS="$LDFLAGS -export-dynamic"
203: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
204: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
205: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
206: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
207: AC_MSG_RESULT($ac_export_dynamic)
208:
209: #terminology is a bit unusual here: The host is the system on which
210: #gforth will run; the system on which configure will run is the `build'
211: AC_CANONICAL_HOST
212: case "$host_cpu" in
213: arm*)
214: machine=arm
215: CFLAGS="$CFLAGS -fomit-frame-pointer"
216: if test x$platform = xnxt; then
217: CFLAGS="$CFLAGS -mthumb -mthumb-interwork"
218: fi
219: if test -z $arm_cacheflush; then
220: no_dynamic_default=1
221: arm_cacheflush=arch/arm/cacheflush0
222: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
223: fi
224: AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2])
225: AC_LIBOBJ(../$arm_cacheflush)
226: #longer skipcodes lead to problems on ARM, and it uses
227: #only 4-byte alignment anyway
228: test "$skipcode" || skipcode="nop"
229: ;;
230: hppa*)
231: machine=hppa
232: $srcdir/mkinstalldirs arch/hppa
233: AC_LIBOBJ(../arch/hppa/cache)
234: #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
235: LDFLAGS="$LDFLAGS -Xlinker -N"
236: LIBS="$LIBS -L/lib/pa1.1/"
237: ;;
238: sparc*)
239: machine=sparc
240: ;;
241: i386)
242: machine=386
243: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
244: ;;
245: i486)
246: machine=386
247: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
248: ;;
249: i*86)
250: machine=386
251: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
252: CFLAGS_1="$CFLAGS"
253: CFLAGS="$CFLAGS -march=pentium"
254: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
255: ;;
256: x86_64)
257: machine=amd64
258: ;;
259: ia64*)
260: machine=ia64
261: AC_LIBOBJ(../arch/ia64/flush_icache_block)
262: test "$skipcode" || skipcode="nop.i 0"
263: #".skip 16" passes the test below,
264: # but gives an assembler error in engine
265: ;;
266: m68k)
267: machine=m68k
268: CFLAGS="$CFLAGS -fomit-frame-pointer"
269: if test "$host_os" = "nextstep3"
270: then
271: AC_LIBOBJ(termios)
272: fi
273: ;;
274: mips*)
275: machine=mips
276: #dynamic native code has the following problems on MIPS:
277: #
278: #1) J/JAL seems relocatable, but is are only
279: #relocatable within a 256MB-segment. While we try to
280: #get the linker to arrange this, there is no guarantee
281: #that this will succeed (and if the user uses a lot of
282: #memory, it is likely to fail).
283: #
284: #2) The way we generate dynamic native code may
285: #violate MIPS architectural restrictions (in
286: #particular, the delay slots of LW, MFLO, etc.)
287: #
288: #Therefore we disable dynamic native code by default:
289: if test -z $no_dynamic_default; then
290: no_dynamic_default=1
291: AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
292: fi
293: ;;
294: alpha*)
295: machine=alpha
296: #full IEEE FP support for more uniformity across platforms:
297: CFLAGS="$CFLAGS -mieee"
298: ;;
299: power*|rs6000)
300: machine=power
301: $srcdir/mkinstalldirs arch/power
302: AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
303: #long long is broken on (at least) gcc-2.95.* for PPC
304: test x$ac_cv_sizeof_long_long = x &&
305: ($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
306: ac_cv_sizeof_long_long=0
307: ;;
308: *)
309: AC_MSG_WARN([Using a generic machine description])
310: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
311: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
312: machine=generic
313: #I-cache flushing would be needed for dynamic code generation
314: if test -z $no_dynamic_default; then
315: no_dynamic_default=1
316: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
317: fi
318: esac
319: AC_SUBST(host)
320:
321: MAKEINC=""
322:
323: echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)"
324: if test x$EC_MODE = xtrue
325: then
326: echo "Check for arch/$machine/$platform/gforth.ld"
327: if test -f arch/$machine/$platform/gforth.ld
328: then
329: LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS"
330: if test x$platform = xnxt; then
331: LIBS="$LIB_PATH/lib/gcc/arm-elf/$($CC --version | grep GCC | cut -d' ' -f3)/interwork/libgcc.a $LIB_PATH/arm-elf/lib/interwork/libc.a $LIBS"
332: fi
333: fi
334: if test -f arch/$machine/$platform/make.inc
335: then
336: MAKEINC="include ../arch/$machine/$platform/make.inc"
337: fi
338: fi
339: AC_SUBST(MAKEINC)
340:
341: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
342: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
343: [number of registers in the default stack cache state for gforth-fast and gforth-native])
344:
345: test x$GCC_PR15242_WORKAROUND = x ||
346: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
347: [force (1) or forbid (0) use of a workaround for a gcc performance bug])
348:
349: dnl AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
350: dnl generation on gccs affected by PR15242])
351:
352:
353: if test "${enable_force_ll+set}" = set; then
354: ac_includes_default="$ac_includes_default
355: #include \"arch/generic/128bit.h\""
356: fi
357:
358: dnl the following macro produces a warning with autoconf-2.1
359: AC_CHECK_SIZEOF(char *)
360: case "$ac_cv_sizeof_char_p" in
361: 2)
362: wordsize=16
363: ;;
364: 4)
365: wordsize=32
366: ;;
367: 8)
368: wordsize=64
369: ;;
370: esac
371:
372: AC_CHECK_SIZEOF(void *)
373: case "$ac_cv_sizeof_void_p" in
374: 2)
375: vwordsize=16
376: ;;
377: 4)
378: vwordsize=32
379: ;;
380: 8)
381: vwordsize=64
382: ;;
383: esac
384:
385: AC_CHECK_SIZEOF(char)
386: AC_CHECK_SIZEOF(short)
387: AC_CHECK_SIZEOF(int)
388: AC_CHECK_SIZEOF(long)
389: AC_CHECK_SIZEOF(long long)
390: AC_CHECK_SIZEOF(intptr_t)
391: AC_CHECK_SIZEOF(int128_t)
392: AC_CHECK_SIZEOF(uint128_t)
393:
394: AC_MSG_CHECKING([for a C type for cells])
395: ac_cv_int_type_cell=none
396: case "$ac_cv_sizeof_char_p" in
397: $ac_cv_sizeof_int)
398: ac_cv_int_type_cell=int
399: ;;
400: $ac_cv_sizeof_short)
401: ac_cv_int_type_cell=short
402: ;;
403: $ac_cv_sizeof_char)
404: ac_cv_int_type_cell=char
405: ;;
406: $ac_cv_sizeof_long)
407: ac_cv_int_type_cell=long
408: ;;
409: $ac_cv_sizeof_long_long)
410: ac_cv_int_type_cell="long long"
411: ;;
412: $ac_cv_sizeof_intptr_t)
413: ac_cv_int_type_cell="intptr_t"
414: ;;
415: $ac_cv_sizeof_int128_t)
416: ac_cv_int_type_cell="int128_t"
417: ;;
418: esac
419: AC_MSG_RESULT($ac_cv_int_type_cell)
420: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
421:
422: AC_MSG_CHECKING([for a C type for wydes])
423: ac_cv_wyde_type_cell=none
424: case 2 in
425: $ac_cv_sizeof_int)
426: ac_cv_wyde_type_cell=int
427: ;;
428: $ac_cv_sizeof_short)
429: ac_cv_wyde_type_cell=short
430: ;;
431: $ac_cv_sizeof_char)
432: ac_cv_wyde_type_cell=char
433: ;;
434: $ac_cv_sizeof_long)
435: ac_cv_wyde_type_cell=long
436: ;;
437: $ac_cv_sizeof_long_long)
438: ac_cv_wyde_type_cell="long long"
439: ;;
440: $ac_cv_sizeof_intptr_t)
441: ac_cv_wyde_type_cell="intptr_t"
442: ;;
443: $ac_cv_sizeof_int128_t)
444: ac_cv_wyde_type_cell="int128_t"
445: ;;
446: esac
447: AC_MSG_RESULT($ac_cv_wyde_type_cell)
448: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
449:
450: AC_MSG_CHECKING([for a C type for tetrabytes])
451: ac_cv_tetrabyte_type_cell=none
452: case 4 in
453: $ac_cv_sizeof_int)
454: ac_cv_tetrabyte_type_cell=int
455: ;;
456: $ac_cv_sizeof_short)
457: ac_cv_tetrabyte_type_cell=short
458: ;;
459: $ac_cv_sizeof_char)
460: ac_cv_tetrabyte_type_cell=char
461: ;;
462: $ac_cv_sizeof_long)
463: ac_cv_tetrabyte_type_cell=long
464: ;;
465: $ac_cv_sizeof_long_long)
466: ac_cv_tetrabyte_type_cell="long long"
467: ;;
468: $ac_cv_sizeof_intptr_t)
469: ac_cv_tetrabyte_type_cell="intptr_t"
470: ;;
471: $ac_cv_sizeof_int128_t)
472: ac_cv_tetrabyte_type_cell="int128_t"
473: ;;
474: esac
475: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
476: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
477:
478: AC_MSG_CHECKING([for a C type for double-cells])
479: ac_cv_int_type_double_cell=none
480: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
481: $ac_cv_sizeof_short)
482: ac_cv_int_type_double_cell=short
483: ;;
484: $ac_cv_sizeof_int)
485: ac_cv_int_type_double_cell=int
486: ;;
487: $ac_cv_sizeof_long)
488: ac_cv_int_type_double_cell=long
489: ;;
490: $ac_cv_sizeof_long_long)
491: ac_cv_int_type_double_cell="long long"
492: ;;
493: $ac_cv_sizeof_intptr_t)
494: ac_cv_int_type_double_cell="intptr_t"
495: ;;
496: $ac_cv_sizeof_int128_t)
497: ac_cv_int_type_double_cell="int128_t"
498: ;;
499: esac
500: AC_MSG_RESULT($ac_cv_int_type_double_cell)
501:
502: AC_MSG_CHECKING([for a C type for unsigned double-cells])
503: ac_cv_int_type_double_ucell=none
504: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
505: $ac_cv_sizeof_short)
506: ac_cv_int_type_double_ucell="unsigned short"
507: ;;
508: $ac_cv_sizeof_int)
509: ac_cv_int_type_double_ucell="unsigned int"
510: ;;
511: $ac_cv_sizeof_long)
512: ac_cv_int_type_double_ucell="unsigned long"
513: ;;
514: $ac_cv_sizeof_long_long)
515: ac_cv_int_type_double_ucell="unsigned long long"
516: ;;
517: $ac_cv_sizeof_intptr_t)
518: ac_cv_int_type_double_ucell="unsigned intptr_t"
519: ;;
520: $ac_cv_sizeof_uint128_t)
521: ac_cv_int_type_double_ucell="uint128_t"
522: ;;
523: esac
524: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
525:
526: if test "$ac_cv_int_type_double_cell" = none || \
527: test "$ac_cv_int_type_double_ucell" = none
528: then
529: AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
530: AC_LIBOBJ(dblsub)
531: AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
532: else
533: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
534: AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
535: fi
536:
537: AC_TYPE_OFF_T
538: AC_CHECK_SIZEOF(off_t)
539: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
540: ac_small_off_t=$?
541: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
542:
543: ENGINE_FLAGS=
544: AC_SUBST(ENGINE_FLAGS)
545:
546: # Try if GCC understands -fno-gcse
547:
548: AC_MSG_CHECKING([if $CC understands -fno-gcse])
549: CFLAGS_1="$CFLAGS"
550: CFLAGS="$CFLAGS -fno-gcse"
551: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
552: CFLAGS="$CFLAGS_1"
553: AC_MSG_RESULT($ac_nogcse)
554:
555: # Try if GCC understands -fno-strict-aliasing
556: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
557: CFLAGS_1="$CFLAGS"
558: CFLAGS="$CFLAGS -fno-strict-aliasing"
559: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
560: CFLAGS="$CFLAGS_1"
561: AC_MSG_RESULT($ac_nostrictaliasing)
562:
563: # Try if GCC understands -fno-crossjumping
564: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
565: CFLAGS_1="$CFLAGS"
566: CFLAGS="$CFLAGS -fno-crossjumping"
567: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
568: CFLAGS="$CFLAGS_1"
569: AC_MSG_RESULT($ac_nocrossjumping)
570:
571: # Try if GCC understands -fno-reorder-blocks
572: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
573: CFLAGS_1="$CFLAGS"
574: CFLAGS="$CFLAGS -fno-reorder-blocks"
575: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
576: CFLAGS="$CFLAGS_1"
577: AC_MSG_RESULT($ac_noreorder_blocks)
578:
579: # Try if GCC understands -falign-labels=1
580: AC_MSG_CHECKING([if $CC understands -falign-labels=1])
581: CFLAGS_1="$CFLAGS"
582: CFLAGS="$CFLAGS -falign-labels=1"
583: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no)
584: CFLAGS="$CFLAGS_1"
585: AC_MSG_RESULT($ac_align_labels)
586:
587: # Try if GCC understands __attribute__((unused))
588: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
589: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
590: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
591: AC_MSG_RESULT($MAYBE_UNUSED)
592:
593: echo "machine='$machine'"
594:
595: dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
596: AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
597: AC_SUBST(asm_fs)
598:
599: dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
600: AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
601: AC_SUBST(disasm_fs)
602:
603: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
604:
605: case "$host_os" in
606: *win32*)
607: # !!!FIXME!!! problems with cygwin and ';' as path separator
608: DIRSEP="\\\\"
609: PATHSEP=";"
610: #we want the builtins of command.com/cmd.exe and its
611: # handling of .com files.
612: #$COMSPEC contains the name of the Windows shell;
613: # the ./ is there, because the bash does not recognize
614: # absolute DOS filenames
615: DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
616: ;;
617: *darwin*)
618: #Darwin uses some funny preprocessor by default; eliminate it:
619: AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
620: CFLAGS="$CFLAGS -no-cpp-precomp"
621: DIRSEP="/"
622: PATHSEP=":"
623: DEFAULTSYSTEMPREFIX=""
624: ;;
625: *)
626: DIRSEP="/"
627: PATHSEP=":"
628: DEFAULTSYSTEMPREFIX=""
629: ;;
630: esac
631: AC_SUBST(DIRSEP)
632: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
633: AC_SUBST(PATHSEP)
634: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
635: AC_SUBST(DEFAULTSYSTEMPREFIX)
636: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
637:
638: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
639: #This magic incantation seems to be completely undocumented.
640: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
641:
642: dnl Now a little support for DOS/DJGCC
643: AC_SUBST(GFORTH_EXE)
644: GFORTH_EXE=""
645: AC_SUBST(GFORTHFAST_EXE)
646: GFORTHFAST_EXE=""
647: AC_SUBST(GFORTHITC_EXE)
648: GFORTHITC_EXE=""
649: AC_SUBST(GFORTHDITC_EXE)
650: GFORTHDITC_EXE=""
651:
652: AC_SUBST(FORTHSIZES)
653:
654: dnl if test "$PEEPHOLE" = "yes"
655: dnl then
656: dnl PEEPHOLEFLAG="true"
657: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
658: dnl else
659: dnl PEEPHOLEFLAG="false"
660: dnl fi
661: PEEPHOLEFLAG="true"
662: AC_SUBST(PEEPHOLEFLAG)
663:
664: dnl copy commands for systems that don't have links
665: AC_SUBST(LINK_KERNL)
666: LINK_KERNL=""
667:
668: #if test $host_os=dos
669: #then
670: # echo Configuring for DOS!!!
671: # MAKE_EXE="coff2exe gforth"
672: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
673: #fi
674:
675: dnl the following macro produces a warning with autoconf-2.1
676: AC_C_BIGENDIAN
677: AC_SUBST(KERNEL)
678: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
679: if test $ac_cv_c_bigendian = yes; then
680: bytesex=b
681: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
682: else
683: bytesex=l
684: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
685: fi
686:
687: #check how to do asm(".skip 16")
688: #echo "CFLAGS=$CFLAGS"
689: #echo "ac_link=$ac_link"
690: AC_MSG_CHECKING([if and how we can waste code space])
691: if test -z "$skipcode"; then
692: skipcode=no
693: CFLAGS_1="$CFLAGS"
694: CFLAGS="$CFLAGS $ENGINE_FLAGS"
695: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
696: do
697: AC_TRY_RUN(
698: [int foo(int,int,int);
699: main()
700: {
701: exit(foo(0,0,0)!=16);
702: }
703: int foo(int x, int y, int z)
704: {
705: static void *labels[]={&&label1, &&label2};
706: if (x) {
707: y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
708: label1:
709: asm("$i"); /* or ".space 16" or somesuch */
710: label2: ;
711: }
712: {
713: if (y) goto *labels[z]; /* workaround for gcc PR12108 */
714: return labels[1]-labels[0];
715: }
716: }]
717: ,skipcode=$i; break
718: ,,)
719: done
720: CFLAGS=$CFLAGS_1
721: fi
722: AC_MSG_RESULT($skipcode)
723: if test "$skipcode" = no
724: then
725: if test -z $no_dynamic_default; then
726: no_dynamic_default=1
727: AC_MSG_WARN(Disabling default dynamic native code generation)
728: fi
729: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
730: else
731: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
732: fi
733:
734: AC_MSG_CHECKING([if and how we can do comments in asm statements])
735: #the point here is to get asm statements that look different to
736: #gcc's "optimizer"
737: if test -z "$asmcomment"; then
738: asmcomment=no
739: CFLAGS_1="$CFLAGS"
740: CFLAGS="$CFLAGS $ENGINE_FLAGS"
741: for i in '"# "' '"! "' '"; "'; do
742: AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
743: done
744: CFLAGS=$CFLAGS_1
745: fi
746: AC_MSG_RESULT($asmcomment)
747: if test "$asmcomment" != no
748: then
749: AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
750: fi
751:
752: test "$no_dynamic_default" || no_dynamic_default=0
753: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
754:
755: dnl Checks for programs.
756: AC_PROG_LN_S
757: AC_PROG_INSTALL
758: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
759:
760: dnl Checks for library functions
761: dnl This check is just for making later checks link with libm.
762: dnl using sin here is no good idea since it is built-into gcc and typechecked
763: AC_CHECK_LIB(m,asin)
764: AC_CHECK_LIB(dl,dlopen)
765: dnl check for libffi 2.x
766: AC_CHECK_LIB(ffi,ffi_call)
767: if test $ac_cv_lib_ffi_ffi_call = yes
768: then
769: LIBFFIFLAG="true"
770: FFCALLFLAG="false"
771: OLDCALLFLAG="false"
772: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
773: else
774: dnl check for ffcall libraries
775: dnl unfortunately, these four calls are separated out into a library each.
776: AC_CHECK_LIB(avcall,__builtin_avcall)
777: AC_CHECK_LIB(callback,__vacall_r)
778: AC_CHECK_LIB(vacall,vacall)
779: AC_CHECK_LIB(trampoline,alloc_trampoline)
780: LIBFFIFLAG="false"
781: FFCALLFLAG="false"
782: OLDCALLFLAG="true"
783: test $ac_cv_lib_avcall___builtin_avcall = yes && FFCALLFLAG="true" && OLDCALLFLAG="false" && AC_DEFINE(HAS_FFCALL,,[define this if you want to use the ffcall libraries])
784: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
785: fi
786: AC_SUBST(LIBFFIFLAG)
787: AC_SUBST(FFCALLFLAG)
788: AC_SUBST(OLDCALLFLAG)
789: if test "$host_os" != "nextstep3"
790: then
791: AC_FUNC_MEMCMP
792: fi
793: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
794: AC_FUNC_FSEEKO
795: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
796: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
797: AC_DECL_SYS_SIGLIST
798: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
799: AC_CHECK_FUNCS(expm1 log1p)
800: AC_REPLACE_FUNCS(rint ecvt)
801: dnl No check for select, because our replacement is no good under
802: dnl anything but DOS
803: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
804: AC_FUNC_FNMATCH
805: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
806: AC_CHECK_FUNCS(mmap sysconf getpagesize)
807: AM_PATH_LISPDIR
808:
809: kernel_fi=kernl${vwordsize}${bytesex}.fi
810: include_fi=kernl${wordsize}${bytesex}${EC}.fi
811: AC_SUBST(kernel_fi)
812: AC_SUBST(include_fi)
813:
814: #this breaks bindists
815: #dnl replace srource directory by absolute value
816: #if test $srcdir = "."; then srcdir=`pwd`
817: #fi
818:
819: AC_SUBST(machine)
820: AC_CONFIG_FILES([
821: Makefile
822: Makedist
823: gforthmi
824: vmgen
825: machpc.fs
826: envos.fs
827: engine/Makefile
828: engine/libcc.h
829: doc/version.texi
830: build-ec ])
831: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
832: chmod +x gforthmi
833: chmod +x vmgen
834: chmod +x build-ec
835: test -d kernel||mkdir kernel
836: $srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
837: ln -s ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],[[PACKAGE_VERSION=$PACKAGE_VERSION]])
838: AC_OUTPUT
839:
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